Car side windows are currently transparent to UVA. This method depends on the screen not being exposed to UVA while the driver is touching the screen, so any c

Car side windows are currently transparent to UVA. This method depends on the screen not being exposed to UVA while the driver is touching the screen, so any car equipped with this would need to have the side windows tinted against UVA. This is something that should be required by the DOT anyway... 90 minutes of UVA exposure a day is a significant carcinogen, but since the glass blocks UVB you don't get a sunburn and don't realize you should be wearing sunscreen while you commute. UVA through car windows is such a significant factor that in the US melanoma is most common on the left side of the body where a driver is exposed to the sun.